I am looking into an issue on a Windows 2008 Server running Citrix XenApp.
The folder: C:\ProgramData\Adobe\Reader\9.3\ARM is currently 15GB and growing.
There are sub folders for about 250 user names under this ARM folder - each of varying sizes up to 250MB each...
There are also 78 folders with numerical names ranging from 579 to 32742 totalling 125MB.
From Google it would appear ARM is something to do with Adobe Reader Manager and automatic updates or something...?
But why does this server have sub folders for 250+ users and can I delete them as the server is running short on space???
There have been quite a few updates after 9.3.0, but as far as I know ARM should not create those subfolders under each User name.
If you (or Users on this system) do not attempt or do not intend to attempt to install those updates, you can safely delete this whole folder and disable ARM by setting bUpdater value to 0 in the policy registry for Adobe Reader 9 - please search this forum for detailed information on this registry.